This is something that should goes in bugs.gentoo.org or CC to the nvidia maintainer, try cardoe.

You might be right, but being aware the package was added today and is in the unstable ~amd64 branch I wasn't sure if I should file a bug and I thought it is more important to post the solution which could help temporarily if someone upgrades the kernel.
Anyway, thanks for the tip_________________best regards/ pozdrawiam
PiotrAF

Sorry to bring up this old thread, but anybody has this issue again with the 3.7 kernel series as well?_________________"Coincidence is God's way of remaining anonymous."
Albert Einstein
"The road to success is always under construction"

The nvidia-drivers-304.64 does support my card and I am using it right now with gentoo-sources-3.6.8
But it will not emerge with the kernel 3.7*_________________niemand is onbekwamer, dan een timmerman zonder hamer

Ok I found a kind of solution.
Here at nvidia they show a patch called "nvidia-304_60.run_linux-3.7.diff.jpg" and applied to the nvidia-drivers-340.60 make it work with the 3.7.1 kernel._________________niemand is onbekwamer, dan een timmerman zonder hamer

copy the patch to /usr/local/portage/x11-drivers/nvidia-drivers/filese
I renamed it to nvidia-304_60.run_linux-3.7.diff
then edit /usr/local/portage/x11-drivers/nvidia-drivers/nvidia-drivers-304.64.ebuild:

I was working on doing an emerge -uavDN world in which nvidia-drivers310 was installed very last.
Just like you i found out that the newest version of nvidia-drivers wasn't compatible with my video card

while i was in kernel3.7 thinking i could just re-emerge, nvidia-drivers304.64

When nvidia-drivers failed to emerge on kernel 3.7 (naturally) all i ended up doing was reboot, running emerge -av nvidia-drivers304.64 on kernel 3.6 which was successful
i booted back into kernel 3.7 ran eselect opengl set nvida eselect opencl set nvidia and modprobe -r nvidia

Keeping in mind that my /usr/portage/package.mask has >=drivers/nvidia-drivers-305.0.0

I was working on doing an emerge -uavDN world in which nvidia-drivers310 was installed very last.
Just like you i found out that the newest version of nvidia-drivers wasn't compatible with my video card

Perhaps the 310.19 driver is still working but with unpredictable results

tippincows wrote:

Keeping in mind that my /usr/portage/package.mask has >=drivers/nvidia-drivers-305.0.0

Strange that the nvidia-drivers-310 was still merged. Perhaps you should put nvidia-drivers-305.0 there instead. (not 0.0)